Final answer:
Columbus found the Navidad fort destroyed and all the men dead.
Step-by-step explanation:
When Christopher Columbus returned to the Navidad fort during his Second Expedition, he found that the fort had been destroyed and all of the men he had left there were dead. The fort had been attacked by the indigenous people of the island. This tragic event became known as the Navidad Massacre.
Learn more about Navidad fort during Columbus's Second Expedition